port (Smart Link group view)

Function

The port command adds an interface to a Smart Link group and specifies the interface as the master or slave interface.

The undo port command deletes a master or slave interface from a Smart Link group.

By default, a Smart Link group has no member interface.

Format

port interface-type interface-number { master | slave }

undo port interface-type interface-number { master | slave }

undo port { all | master | slave }

Parameters

Parameter	Description	Value
interface-type interface-number	interface-type specifies the interface type. interface-number specifies the interface number.	-
master	Specifies an interface as a master interface.	-
slave	Specifies an interface as a slave interface.	-
all	Deletes all the interfaces in a Smart Link group.	-

Views

Smart Link group view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

The Smart Link function implements link redundancy and rapid link status transition on a dual-homed network. When a device is connected to upstream devices by two uplink interfaces, one link is blocked and functions as the backup of the other link. When the active link fails, traffic is switched to the other link. To implement the Smart Link function, create a Smart Link group and add two interfaces to the Smart Link group, one as the master interface, and the other as the slave interface. The master interface is in active state; the slave interface is in inactive state.

Prerequisites

A Smart Link group has been created using the smart-link group command. The Spanning Tree Protocol (STP) has been disabled on the interfaces to be added to the Smart Link group by using the stp disable command.

Follow-up Procedure

Run the smart-link enable command to enable the Smart Link group. Run the flush send command to enable the Smart Link group to send Flush packets, and run the smart-link flush receive command on the upstream device interface to enable the interface to receive Flush packets.

Precautions

Before adding a new master or slave interface to a Smart Link group, delete the previous one from the Smart Link group.

The slave interface is blocked when the Smart Link group is enabled.

An interface can be added to only one Smart Link group.

An interface cannot be added to a Smart Link group in the following situations:

The RRPP, SEP, and ERPS interfaces cannot be added to the Smart Link group.
STP is enabled on the interface.
The interface has been added to an Eth-Trunk.
The interface has been added to a Monitor Link group.
The interface has been added to another Smart Link group.

Example

# Add GE0/0/1 to Smart Link group 1 and specify the interface as the master interface.

<HUAWEI> system-view
[HUAWEI] smart-link group 1
[HUAWEI-smlk-group1] port gigabitethernet 0/0/1 master